A .17 for DEER? that's just crazy. In WI there are laws against using mini or micro calibers on deer, etc., and there's a damn good reason for that. There are also laws against shining deer at night, I'm SURE that's not what Guntotin' fool meant in his post.
From the WI DNR site, 2006 guidelines...
Rifles:
• It is illegal to hunt deer with any air rifle, rimfire rifle, or any center-fire rifle less
than .22 caliber. (That means YOU GTF!

)
• Any .22 caliber or larger center-fire rifle is legal to use to hunt deer in areas open
to hunting deer with rifles.
Handguns:
• To be legal for deer, handguns must use center-fire cartridges of .22 caliber or
larger and have a 5 1/2 inch minimum barrel, measured from the firing pin to the
muzzle with the action closed.
.17HMR was designed to for a flat trajectory over long distances, not to take down an animal 100# or more. You're trying to drink whiskey from a bottle of wine, secretagentmann007. Shooting anything larger than a bunny with that thing is probably illegal, certainly dumb and irresponsible. The sort of behavior PETA and anti-gunners just LOVE to hear about
Just my $.02 of course, but I think .30 cal is needed for deer or larger. (That would include .270, basically necked-down 30/06.) I don't know anyone in central WI who hunts with smaller calibers, except for youths and "recoil-sensitive" folks who like a .243. On the other hand, not too many people use .300 Ultra Mags either... most folks like some venison left after they kill the deer , lol.